Machine for making seamless paper bags



(No Model. 6 Sheets-Sheet 1.

- G. E. ADAMS.

MACHINE FOR MAKING SEA'MLESS PAPER BAGS. No. 244,156.

Patented July 12,1881.

(N9 Model.) 6 Sheets8h'eet 2,

0. B. ADAMS. MAGHINE FOR MAKING SEAMLESS PAPER BAGS. No. 244,156. Patented July v12, 1881.

,(No Model.) 6 Sheets-Sheet 3.

G. E. ADAMS. MACHINE FOR MAKING SEAMLESS PAPER BAGS.- No. 244,156. Patented July 12,1881.

7 wj w MM (No Model.) 6 Sheets-Sheet 4.

O.E.ADAMSQ MACHINE FOR MAKING SEAMLESS PAPER BAGS.

No. 244,156. Patented July 12,1881.

z iii iikax B MFLLEW (No Model.) 6 SheetsSh eet 5.

G. E; ADAMS. MACHINE FOR MAKING SEAMLESS PAPER BAGS. No. 244,156. Patented July 12,1881.

(No Model.) 6 Sheets-Sheet 6,

0. E. ADAMS. I MACHINE FOR MAKING'SEAMLESS PAPER BAGS;

No. 244,166. Patented July 12,1881.

um lrn nur W I 2 4%. I

EEEEE 5. Ph lwuklwgupher, Wishinglnm D v UNITED STATES PATENT OFFICE.

HALF TO JANE C. PULTZ, OF PLANTSVILLE, CONNECTICUT.

MACHINE FOR MAKING SEAMLESS PAPER BAGS.

SPECIFICATION forming part of Letters Patent No. 244,156, dated July 12,1881.

Application filed April 25, 1881. (No model.)

the seamless paper bag which forms the subj ect of Letters Patent granted to John P. Pultz,

March 21, 1876; and the machinery, briefly stated, consists of a revolving frame carrying a series of formers mounted upon hollow arms and connected with an air-pump, the formers being so arranged that as the frames revolve, they are immersed in a bath of paper-pul p and the paper deposited therein by suction. After being so immersed, the formers, with the paper deposited thereon, are carried past proper drying apparatus, and the paper is finally taken ofi from the formers, so that upon reaching the vat again they are ready to repeat the opera-' tion.

The object of my improvement is to so facilitate the manufacture of seamless bags that they may be made at substantially the same cost as the same amount of paper can be made into a flat sheet. I attain this object by the mechanism illustrated in the accompanying drawings, in which- Figure l is a plan view. Fig. 2 is a developed view, looking upon one edge of the machine, with the front side of the vat broken away in order to show the formers which are passing through the same. Fig. 3 is a detached view, illustrating the operation of the take-ofls. Fig. 4 shows the cam which operates the take-offs vertically. Fig. 5 is a detached side elevation of the central post upon which the formers are mounted. Fig. 6 is a vertical section of the same. Fig. 7 is a transverse section on line .1: ac of Fig. 6. Fig. Sis a vertical section, showing the central post, one hollow arm, and its former, together with the vat and the cam for raising the formers out of the vat. Fig. 9 is a detached sectional view on line y, Fig. 1, showing one former and the drying-frame. Fig. 10 is a detached front view, showing the manner of mountingthe hollow arms.

Fig. 11 is a side elevation, partly in section, showing one take-01f and Fig. 12 illustrates another form of machine which embodies some of the same general features, and which is also of my invention.

I arrange upon a central and hollow post, A, a revolving frame, B, carrying with it a series of hollow arms or pipes, a, the outer ends of which are adapted to rise and fall vertically. The, outer end of each arm is provided with a slotted plate, I), which is most clearly shown in Fig. 10, and has for its purpose to guide the outer end of the arm in its vertical movements. Each arm is provided upon its under side with a friction-roller, 0, (see Figs.8 and 10,) which roller rests upon the upper edge of an annular cam, 0, most clearly shown in Fig. 2. The upper edge of this cam lies in a horizontal plane, except the depressed portion, which is shown in Figs. 2 and 8, and the rollers resting upon said edge regulate the vertical heightof the hollow arms, and therefore, when the arms reach the depressed portion of this cam, they are allowed to fall, as shown in Figs. 2 and 8. Each arm a is provided with a former, d, which former is made of wire-cloth, with a solid end which forms a water tight bottom. They are so mounted upon the ends of the hollow arms that they may be readily rotated thereon, but so that they cannot be detached therefrom accidentally. This can be effected by well-known and simple arrangement, such as a small pin entering a groove formed upon the outside of the arm, or in a collar attached thereto. I also prefer to make these formers slightly tapering and slightly rounded upon their smaller ends.

The entire former, except at the lower end, is v of wire-cloth, or of other material perforated to effect the same object.

The vat D is located at one side of the machine, immediately in front of the depressed portion of the cam C, so that as the formers are dropped they will dip into said vat. The vat will contain ordinary paper-pulp supplied and regulated in a well-known manner to paper-makers.

The several hollow arms a are pivoted to the reel B, as at I, Fig. 8, and in rising and falling this pivot constitutes the axis on which they swing. Upon the upper end of the central hollow post there are as many short tubes leading therefrom as there are hollow arms on 5 the reel. Ashort piece of elastictubing,f, connects these short tubes with each hollow arm, thereby allowing said arms to rise and fall. An ordinary suction-pump is connected to the central post, A, so as to create a vacuum therein. The lower part of the post is stationary, while the reel, the hub B of which constitutes the cap of the post, revolves there-. on. The upper end of the post is cut away for about three-quarters of its circumference 1 to a point a little below its connection with the flexible tubesf, while the remaining portion rises above said tubes,- thereby forming communication between the tube and the central post in aboutthree-quarters of the tubes, while the highest part of the post cuts off communication from the remaining tubes, as illustrated in Figs. 6 and 7. This highest part of the post is so located with reference to the vat and other parts of the machine that communication is cut off from the tubes which are on the last quarter of their revolution before entering the vat, whereby a vacuum is created not only when the formers are immersed in the vat, but during a large share of their course after 0 leaving the vat. The suction of the pump through the hollow arms and formers, when they are in the vat, will soon deposit a coating of paper upon the formers, the water being drawn through the tubes and returned again 5 to the vat by means not shown. Neither is it considered necessary to fully describe the operation of the paper in adhering to the wirecloth formers, as-it is old in the arts to deposit a coating of paper upon wire-cloth by the suction process. When the formers are sufficiently coated and rise up out of the vat said coating will close the end of the arms and make them air-tight, thereby preserving a vacuum within the hollow arms for some 4 5 time after they leave the vat, which vacuum will have a tendency to keep the paper firmly against the formers during the drying opera tion, to be hereinafter described.

The drying-frameE, a cross-section of which is shown in Fig. 9, extends around outside of the reel for about two-thirds of its circumference, as shown in Fig. 1. This frame is so situated that the revolving formers will press against the outside of it as they revolve by it, said frame being so shaped as to partially cover the ends of the formers as well as its sides. This drying-frame may be heated in any proper manner, so as to dry the bags or partially dry them as they pass by it. A continuous motion is given to the reel and formers by power applied through any convenient or ordinary means. As soon as the communication between the hollow arms and the central pipe iscut off there is no longer any tendency 6 to draw the paper closely against the sides of the formers, so that the rolling imparted to .i I I I'll-Id of these take-offs are also shown in plan view in Fig. 1, also a segment of the circular rim or frame F, which supports the take-offs in their vertical movements.

It is my intention to provide each hollow arm and former with a take-off; but only two are shown in thedrawings. These take-ofl's consist of a pair of tongs or arms, i i,Fig. 3, 8 5

pivoted to a cross-piece, j, which slides in vertical-ways 'formedin pendants Ic attached to the rim F.

Upon the inside of the annular cam 0 there is a similar cam, 0, upon the upper edge of 0 which the tails of the take-off rod or frame G rest. These take-off rods are mounted upon the arms of the reel B, so as to slide vertically, andtheir lower ends are provided with frictionrollers I, so that as the take-ofl's are carried by 9 5 the depression in the cam O a vertical movement is given to said take-off rods or frames, as

shown in Fig. 4. This depression in the takeoff cam O is so located with reference to the vat as to operate the take-offs just as the form- :00 ers are approaching the vat. The left-hand take-01f in Fig. 3 is represented as having descended a short distance. The cross-arm j is so fitted in its ways as to bind a little, just sufficient to prevent the take-offs from falling 1o 5 of their own weight, or before they are depressed by the take-off rods, whereby thevfirst vdownward movement of the take-off rods opcrates upon the toggle-joint which connects the upper ends of the arms t i so as to open the no lower end of said arms, as shown at theleft in said Fig. 3. The weight of the take-off rod is such that when the arms have been thus opened it will overcome the friction upon the crosspiece and carryv the open tongs or take-01f I r 5 downward to the desired point. The ways in which the cross-piece j slides may be provided with an adjustable side and set-screws, so as to regulate the friction as may be desired. When the take-oil's have reached their lowermost point and the rods begin to rise again the toggle-joint will operate to close the take off arms, as shown at the right in Fig. 3, and as they rise they will lift the bag from oil the former. They may then be caught by an end- I 25 less apron or other mechanism and carried to any desired point for further drying, folding, or trimming.

Although for convenience I have illustrated the take-off arms 1' 13 as simple arms, in plac I3 tice I intend to provide each arm with a concave shell of a size to fit a greater or less portion of one side of the former, and to line said shells with soft rubber, so that they will lift the bag from the former without tearing the paper or injuring the wire-cloth. These shells may be made large enough to embrace half of the bag, and affixed rigidly to the lower end of each arm, so as to move with it, or the upper ends of the shells may be hinged together near the top, and the lower ends so hung to the lower ends of the arms that the shells will open and close with the arms. Iintend also to fold or flatten the bag while it is in this pair of shells.

As before stated, the hereinbefore-described device is one adapted for operation with a continuously-revolving motion.

In Fig. 11 I have illustrated a device in which the reel is intended to operate with an intermittent motion and stop at each quarterrevolution with one of the formers in the lowermost position. This, instead of being mounted upon a vertical hollow post, is mounted upon a horizontal pipe, which is also connected to a suction-pump. The arms are hollow and provided at their outer ends with wire-cloth formers. The horizontal pipe, upon which they are mounted, is provided with a single orifice at the bottom, so that communication is made only with the arm and former, which, for the time being, is in the lowermost position.

The paper is deposited upon the former as in the first-described machine, and when it is removed from the vat and carried forward onequarter of a revolution it comes into contact with a drying-roller for drying the sides of the bag, and at its next quarter-revolution with another roller, and in passing from thence to its next stopping-place the end of the former passes under a yielding roller to dry the bottom of the bag, after which it may be removed in any convenient manner before the former again enters the bath of paper-pulp.

In either of said machines there may be as many hollow arms and formers as may be desired, and when either kind of reel and formers are made to operate with an intermittent motion the vat containing the pulp may be made to rise and fall by means of proper machinery, so as to immerse the formers in the vat. The plan first described, however, I consider preferable, as it admits of a continuouslyrevolving motion of the reel.

The supply of paper-pulp and the consistency of it, and all those acts which are necessary to deposit a thicker or thinner film of paper upon the formers, may be regulated in the same manner as in ordinary paper-making, and consequently it is unnecessary to herein describe the same.

Many of the details of my machines may be made to vary from that illustrated in the drawings, which are necessarily on a greatly-reduced scale; but the principal features thereof may be retained notwithstanding the changes in detail.

I claim as my invention 1. A reel having a series of hollow arms, with wire-cloth or perforated forms mounted upon said arms, substantially as described, and for the purpose specified.

2. The combination of a vat or receptacle for paper-pulp with a revolving reel having a series of hollow arms and formers which pass successively into said vat, substantially as described, and for the purpose specified.

3. The combination of a pipe or hollow post, left open upon one side, with a reel having a series of hollow arms and formers rotating upon said pipe or post, which arms communicate therewith when opposite the opening in the post, but are cut off from communication during the remainder of their revolution by means of a solid part of said pipe or post, substantially as described, and for the purpose 4. The combination of a reel with the pivoted hollow arms and formers and annular cam O, substantially as described, and for the purpose specified.

5. The combination of a reel with the pivoted hollow arms and formers, the central hollow post, flexible tubes f, and cam O, substantiahy as described, and for the purpose specifiec 6. The combination of a reel having a series of hollow oscillating arms bearing formers, the annular cam O, and the vat D, located in the path of said formers and opposite the depressed portion of, said cam, substantially as described, and for the purpose specified.

7. The combination of a revolving reel having a series of hollow arms bearing rolling formers, the annular cam O, vat D, and drying and pressing frame E, substantially as described, and for the purpose specified.

S. The combination of the reel bearing hollow arms and formers with the take-off rods G and annular cam O, substantially as described, and for the purpose specified.

9. The combination of the reel bearing hollow arms and formers with the take-oft rods G, cam O, rim F, pendants k k, cross-piece j, and armst' 6, connected to the take-off rods by means of a toggle-joint, substantially as described, and for the purpose specified.

10. The combination of the revolving reel bearing hollow arms and formers, the vat, and take-off mechanism, operating substantially as described, and for the purpose specified.

11. The combination of the reel bearing oscillating arms and formers, the cam O, vat D, take-off rods or frame G, and the cam 0, substantially as described, and for the purpose specified.

GHAUNOEY E. ADAMS.

Witnesses:

E. L. MUNN, J. B. MUNN. 

